Needle bar for flat hosiery machines



' .1mm 24, 1941 K. R. LxEBERKNEcu-IT NEEDLE BAR FOR FLAT HOSIERY MACHINES Filed July 1, 1938 2 Sheets-Sheet 1 ln Ven #or SW7 Ao/na T H c E N K R E. E M on.. K

June 24, 1941- K. R. LlEBERKNEcH-r NEEDLE BAR FOR FLAT HOSIERY MACHINES Filed July 1, 1938 2 Sheets-Sheet 2 f www) M Ao/nays Que No@ ggg Patented June 24, 1941 NEEDLE BAR FOR FLAT HOSIERY MACHINES Karl Richard Leberkneeht, Oberlungwtz in Saxony, Germany Application July 1, 1938, Serial No. 217,065 In Germany July 3, 1937 (Cl. (i6-114) Claims.

The present invention relates to needle bars with needle row sections, which are stationary relatively to the bar and with other needle sections, which are movable relatively to the bar. Such needle bars consist of the needle bar plate, to which the needle beds for the stationary needle row sections are attached and of one or more bar sections, which are swingably or shiftably arranged and serve as carriers for the needle beds of the movable needle row sections.

The chief object of the invention is to arrange the needle bars in such a manner that the width of the movable and stationary needle row section can be altered by exchanging the needle beds. For this purpose the needle beds on the stationary and movable bar sections are of different widths. The width of the individual beds is so chosen and the fastening means are so formed that individual beds may be selectively xed to the movable and the stationary -bar sections. means are further so formed that it is possible to attach needle beds of diierent widths to the same parts of the needle bar. Moreover, the fastening means are so designed that a displacement of the needle beds during the fastening of the same is prevented, and that all needle points always are kept on the same level.

Another object of the invention is to provide fastening means for the covers, which are so arranged that single needles may be exchanged in a simple manner. The fastening means are hereby so arranged that the cover can only be moved perpendicularly to the needle bed and that lateral displacements or rotations are prevented. This is of importance, because the covers laterally must run absolutely ush with the edges of the needle beds, in order to render it possible to' build up the needle rows from the individual needle beds.

An embodiment of the invention is illustrated by way of example in the accompanying drawings.

Fig. l is a front view, Fig. 2 a plan View and Fig. 3 a side view of a needle bar according to the invention.

Fig. l is a side view similar to that shown in Fig. 3, but with the central part of the bar swung out.

Fig. 5 shows the needle bar seen from the rear.

Figs. 6 and 7 are sectional views through a needle bed.

Fig. 8 is a plan view of the needle bed.

Figs. 9 to 13 are schematical views, showing the subdivision of the needle bar and various possibilities of combining the individual needle beds.

The needle bar consists of a bar plate l, the

The fastening y upper edge of which is formed with a notch 2 (Fig. 5), which serves for receiving the movable central section 3 of the bar. The central section is located on a lever il, which is arranged on a pin 5. This pin' is held by a. bearing 6, which is screwed to the front side of the bar plate l. Fig. 4 shows the bar section 3 in swung-out position. In order to secure this section in its Working position a, locking device l of known construction is provided, which can be actuated by means of the rail 8 and the T-shaped arm 9.

To the movable bar section 3 a plurality of needle beds l0, ll, l2 are attached, which together give the width of the movable needle row section.

The stationary parts of the needle row are arranged to the right and to the left of the movable central section. Also the stationary needle row sections comprises a plurality of needle beds I3, M, l5 and i3', it', l5 respectively.

The fastening means of the individual needle beds are so shaped that the needle beds can be exchanged mutually, in order to render it possible to alter the Width of the movable central section under maintenance of the same total width of the needle row. Figs. 6 to 8' show the structure of the needle rows. `The needles it are arranged in a rail lll made from brass, which is located on a plate lli. t9 denotes the cover of the needle bed. On the cover l@ a screw 2W is arranged, which fits in a tubular part 2i of the plate i3. The cover is fixed by means of a nut 22. The correct position of the cover is secured by means of a pin 2t, which engages a notch 2li in the cover it. The tubular part 2i has a thread 25 adapted to receive a nut 2t. In the stationary parts of the bar and also in the movable part 3 oblong holes 2l are formed, which serve for the reception of the tubular members E l. The needle beds are xed in position by introducing the members 2i through the holes 2l and attaching said members to the section of the bar by means of the screws 2li. The holes 2i are made oblong in order to render it possible to attach needle beds of different lengths to the same bar section.

In order to secure a uniform width of the needle row, plates 2t of brass are arranged at both ends of the bar. These plates serve as stops for the outer needle beds li and i3. To secure the same level of the needles, also when the needle beds are exchanged, and to prevent dislocation of the individual needle beds, a slot 29 is formed in the bar, and this slot is engaged by a projection 3U on the needle beds.

A needle bar of the described construction renders it possible by exchange of the needle beds to alter the Width of the stationary and the movable bar sections. Fig. 9 shows schematically a needle bar. the width b of which is made up from four needle beds 3l, 32 33 and 34. 32 and 33 have the same Width and 3| and 34 :are also of equal widths. The -two stationary needle row sections consist of the needle beds 35, 36 and 35', 36', respectively.

Fig. 10 shows how the width b of the movable needle row can be altered to the width l)l by exchanging 3l and 36 or 34 and 36', respectively. Fig, 11 shows another arrangement, in which the parts 36 and 35 and 35' and 36 respectively, have been exchanged. 'I'his gives the width b2.

According to Fig. 12 the needle beds 32, 33 have been placed at the outer ends of the structure. The movable central section now consists of the needle beds 3l, 35, 35' and 34. This gives the width b3. In Fig. 13 the needle beds 3| and 36 and 34 and 36', respectively, have been exchanged, whereby a still greater width b4 of the movable needle row section is obtained.

The width of the movable central section can thus be altered in a very simple manner by exchanging the needle beds. The needle bar hereby always has the same strength, at any Width of the central section, and forms an integral body. The Width of the central section can be altered within a very short time.

In the manufacture of hosiery it is usually suicient to establish the possibility to produce two diierent upper foot part widths. In the most cases it will therefore be sufficient, merely to exchange the inner beds of the end sections against the outer beds of the central section and to leave the outer needle beds of the end sections in their position.

I claim:

1. Needle bar for at hosiery machines, comprising at least one movable bar section, a plurality of needle beds of different Widths ln the bar section, covers for the needle beds, hollow screws on the needle beds, and other screws within said hollow screws, for attaching the covers of the needle beds.

2. Needle bar for iiat hosiery machines, comprising at least one movable bar section, a plurality of needle beds of different Widths in the bar section, covers for the needle beds, hollow screws on the needle beds, other screws Within the said hollow screws, for attaching the covers of the needle beds, and guides for the covers on said needle beds.

3. A needle bar for iiat hosiery machines cornprising a slotted support, a needle bed removably mounted on said support, a cover for the needle bed, a hollow screw on the needle bed arranged to extend through said slotted support, an additional screw within said hollow screw for attaching the cover of the needle bed, and locking nuts associated with each of said screws.

4. In a needle bar composed of two end' supporting sections and a central supporting section movable with relation thereto, a plurality of pairs of removable and interchangeable needle holding units, each of a different width paired on said end supporting sections, and additional paired removable needle holding units on said central supporting sections, and of still diierent widths. said paired needle holding units on the central supporting section being arranged to be freely interchangeable in any order with the pairs of holding units on the end supporting sections, whereby a plurality of diierent proportionate lengths of the two end needle sections with respect to the central needle section may be determined by the diierence in length of the interchangeable pairs of needle holding units.

5. In a needle bar composed of two end supporting sections and a central supporting section movable with relation thereto, a plurality of pairs of removable and interchangeable needle holding units, each of a different width paired on said end supporting sections, and additional paired removable needle holding units on said central supporting section, and of still different width, said paired needle holding units on the central supporting section being arranged to be freely interchangeable in any order with the pairs of holding units on the end. supporting sections, whereby a plurality of 'different proporionate lengths of the two end needle sections with respect to the central needle section may b e determined by the dii-ference in length of the interchangeable pairs of needle holding units, and fastening means for the needle holding units comprising identical aligned guiding surfaces formed on the two end supporting sections and central supporting section, and extending lengthwise of the needle bar, cooperating guiding surfaces on each of the needle holding units, and clamping means acting transversely of the needle bar for clamping the needle holding units respectively to the several supporting sections.

v. KRL RICHARD HEBIIRKNECHT. 

